Phenol biodegradation by a microbial consortium: application of artificial neural network (ANN) modelling

Perpétuo, Elen Aquino; Silva, Douglas Nascimento; Avanzi, Ingrid Regina; Gracioso, Louise Hase; Baltazar, Marcela dos Passos Galluzzi; Nascimento, Cláudio Augusto Oller do

doi:10.1080/09593330.2011.644585

Cited by 17 publications

(6 citation statements)

References 26 publications

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“…Samples of culture media from the biodegradation assays were collected at regular intervals and subjected to HPLC analysis, using a Shimadzu LC‐MS 2010A analytical system equipped with a Beckman ODS‐C18 column. The UV detector was adjusted to 254 nm and the analysis was carried out using a running 0–60% gradient of acetonitrile for 20 min at a flow rate of 0.8 mL/min, at room temperature (Perpetuo et al ., ).…”

Section: Methodsmentioning

confidence: 97%

Removal of phenolic compounds from raw industrial wastewater by Achromobacter sp. isolated from a hydrocarbon‐contaminated area

Gracioso

Vieira

Baltazar

et al. 2018

Water & Environment J

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The discharge of raw industrial wastewaters, specifically coking wastewater, represents a severe environmental problem. In this work, a phenol-degrading aerobic strain isolated from a hydrocarbon contaminated site, Achromobacter sp. C-1, was tested for degrading raw coking wastewater to explore its potential for use in biological treatment. Initially, phenol degradation was reached after 24 h of inoculation in synthetic wastewater [600 mg/L of phenol]. The maximum specific degradation rate was 0.436 h -1 found in the concentration 300 mg/L. In a raw industrial wastewater containing a mixture of phenols as carbon source [phenol 370 mg/L, m-cresol 100 mg/L and o-cresol 60 mg/L], 90% biodegradation of a mixture of phenols was achieved after 80 h of inoculation. Following the biodegradation process to remove the colour from the wastewater, polishing was performed by activated carbon adsorption, resulting in a clear wastewater (without colour and contaminants) ready for industrial reuse purposes. These results provided useful information about use of the phenol-degrading bacteria for bioaugmentation in industrial wastewater treatment improving the quality of final wastewater. The quality of the resulting wastewater was confirmed by mass spectrometry analysis. This work shows the biodegradation process could be a cost-effective and promising solution for the treatment and reuse of phenolic wastewater.Removal of phenolic compounds from raw industrial wastewater L. H. Gracioso et al.

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Section: Methodsmentioning

confidence: 97%

Removal of phenolic compounds from raw industrial wastewater by Achromobacter sp. isolated from a hydrocarbon‐contaminated area

Gracioso

Vieira

Baltazar

et al. 2018

Water & Environment J

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“…Importantly, the highest degradation efficiency was observed in microbial systems that contained Ph and DE as sources of carbon and energy for both strains. In contrast, Mamma et al [23], Bakhshi et al [24], and Perpetuo et al [25] have reported the efficient degradation of phenol in biological systems. The incomplete degradation of phenol in our studies could be explained by the changed metabolism of microorganisms towards ethers.…”

Section: Biodegradation Of (4-monohalogenated) Diphenyl Ethersmentioning

confidence: 95%

Bacterial Biodegradation of 4-Monohalogenated Diphenyl Ethers in One-Substrate and Co-Metabolic Systems

et al. 2018

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The use of diphenyl ether (DE) and its 4-monohalogenated derivatives (4-HDE) as flame retardants, solvents, and substrates in biocide production significantly increases the risk of ecosystem contamination. Their removal is important from the point of view of environmental protection. The aim of this study was to evaluate the degradation processes of DE and 4-HDE by enzymes of the environmental bacterial strains under one-substrate and co-metabolic conditions. The study is focused on the biodegradation of DE and 4-HDE, the enzymatic activity of microbial strains, and the cell surface properties after contact with compounds. The results show that the highest biodegradation (96%) was observed for 4-chlorodiphenyl ether in co-metabolic culture with P. fluorescens B01. Moreover, the activity of 1,2-dioxygenase during degradation of 4-monohalogenated diphenyl ethers was higher than that of 2,3-dioxygenase for each strain tested. The presence of a co-substrate provoked changes in dioxygenase activity, resulting in the increased activity of 1,2-dioxygenase. Moreover, the addition of phenol as a co-substrate allowed for increased biodegradation of the diphenyl ethers and noticeable modification of the cell surface hydrophobicity during the process. All observations within the study performed have led to a deeper understanding of the contaminants’ biodegradation processes catalyzed by environmental bacteria.

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“…The linear transfer function (purlein) was used in the output layer. The linear transfer function is quite simple; it directly transfers its input to its output (Khataee and Kasiri 2011;Perpetuo et al 2012), as shown in Eq. 4: (Alalayah 2017).…”

Section: Artificial Neural Network (Ann)mentioning

confidence: 99%

Biodegradation of Naphthalene Using Glass Beads Roller Bioreactor: Application of Artificial Neural Network Modeling

Mohammed

Mustafa

Jabbar

2021

Preprint

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A roller bioreactor containing inert glass beads was employed to enhance naphthalene biodegradation in an aqueous solution. Mixed culture of microorganisms was isolated from sewage waste sludge and adopted for naphthalene biodegradation. The biodegradation of 300mg/L naphthalene in the bioreactor with no glass beads proceeded slowly until depletion after seven days. In the presence of glass beads, the biodegradation rate was faster; it depleted after four days. The biodegradation rate of naphthalene was equal to 1.99 mgL-1 hr-1 for bioreactor with no beads, while it is equal to 5.42, and 5.54 mgL-1 hr-1 for bioreactor with 40%load, 6mm size and 50% load, 5mm size of glass beads, respectively. For 500mg/L naphthalene, nine days on the bioreactor with no glass beads and five days on glass beads bioreactors were required to complete depletion. The biodegradation rate is equal to 2.33, 7.29, and 7.85 mg/L-1hr-1 for bioreactors with no glass beads, 40% load with 6mm, and 50% load with 5mm glass beads, respectively. The specific growth rate was increased in the bioreactor with glass beads; it represents 0.031, 0.050, and 0.054 hr−1 for 300mg/L and 0.043, 0.061, and 0.065 hr−1 for 500mg/L respectively for the previously mentioned conditions. An artificial neural network was used to model naphthalene dissolution and biodegradation. A correlation coefficient of 99.2% and 98.3% were obtained between the experimental and predicted output values for dissolution and biodegradation, respectively, indicating that the ANN model could efficiently predict the experimental results. Time represents the most influential parameter on the dissolution and biodegradation treatment.

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Phenol biodegradation by a microbial consortium: application of artificial neural network (ANN) modelling

Cited by 17 publications

References 26 publications

Removal of phenolic compounds from raw industrial wastewater by Achromobacter sp. isolated from a hydrocarbon‐contaminated area

Removal of phenolic compounds from raw industrial wastewater by Achromobacter sp. isolated from a hydrocarbon‐contaminated area

Bacterial Biodegradation of 4-Monohalogenated Diphenyl Ethers in One-Substrate and Co-Metabolic Systems

Biodegradation of Naphthalene Using Glass Beads Roller Bioreactor: Application of Artificial Neural Network Modeling

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